Brewer's Sparrow

Spizella breweri

Brewer's sparrow is a small, slim species of American sparrow in the family Passerellidae. This bird was named after the ornithologist Thomas Mayo Brewer. Source

Where it is now

In the last 8 weeks this bird was recorded 1,040 times across 13 areas (each area is a 5 degree square).

See the Brewer's Sparrow on the live map

Movement and weather

Each season it is first heard regularly where daytime highs are around 20°C (typically 16 to 24°C, from 11 areas).

Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.